It sounds like your ex changed her work schedule. When she was working the night shift, she required a nanny as the children could not be left alone. However, now she is home at night. Due to this change in circumstance, it could be argued that she no longer requires a nanny to care for the children--even though she may want the nanny to clean house etc.
You could file a Request for Order to change the amount of money being spent for 'child care'. The judge would make a decision as to the revised amount.
Answered on Nov 20th, 2014 at 3:34 PM